From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The continued failure of the Phantom clutch friction plate despite modifications.
| Identifier | ExFiles\Box 13\7\ 07-page142 | |
| Date | 27th September 1932 | |
| R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c. SS.{S. Smith} Nor. c. S. Da.{Bernard Day - Chassis Design} c. BY.{R.W. Bailey - Chief Engineer} Rdy. X7300 Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}9/KE. 27.9.32. RE. PHANTOM CLUTCH. X7941 The position of the clutch is still not satisfactory with the stronger clutch springs fitted. Upon dismantling the clutch of 19-KX (10,000 miles car) we find that the friction plate G.75724 had the same features of failure as previous, although whilst running there had been no indication of this taking place. We have had the friction plate carefully measured up. It would appear that as a result of the heavy torque loading of the clutch, arising from the easy-changing and use of the synchromesh gearbox, has had the effect of forcing metal from the leading edge of the sectors according to the direction of the torque, with the result that the slot width has increased as shewn on attached print, which also indicates where the folds in the metal have occurred, the sectional thickness of the plate in these places instead of being .100 is .110". Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||